Fish finders usually cost quite a bit of money. Before you buy one, it is important to learn more about them so that you can choose the right one for your needs.
The tips below should help you with the decision-making process.
Consider the Display
When it comes to the display on your fish finder, one of the most important factors to take into account is its size – for a good gauge of this take a look at Overtons Fishing and find the best fish finder to suit your needs. If you want to be able to view multiple images at the same time, going with a device that has a bigger screen is a good option. For instance, if you want to display the probe along with a map, having plenty of screen space is ideal.
Fish finders typically incorporate multiple technologies including traditional probes, GPS, and ultrasound. All of this information can appear on the screen together. Look for a model that has screen technology that is capable of meeting your needs. Going with a fish finder that has a large screen will usually make it easier to view and understand the images. As a result, you may find it easier to discover fish.
Familiarize Yourself with The Cone Angle
When you hear someone talking about the cone angle of a fish finder, they are referring to the size of the beam of sound that is emitted from the bottom. It starts out narrow at the top and spreads out as it goes down into the water, creating a cone-like shape. Devices that have high cone angles provide a larger coverage area. These fish finders are good for use in water that is relatively shallow. For deeper water, lower cone angles are better since narrower beams do a better job of penetrating the water. Keep in mind, however, that the coverage is not as wide.
Understand Transition Frequency
The probes on fish finders are equipped with transmitters that send out waves toward the bottom of the body of water. In order to see an image on the display screen, the transmission power needs to be adequate for the conditions.
50 kHz frequency: This frequency is ideal for use in the ocean or in deep water. It extends to depths exceeding 200 meters. Thanks to its large cone angle, it also can cover a wider area. In shallow water, however, it doesn’t offer the same high-quality resolution as higher frequencies. In most cases, this frequency is reserved for situations involving saltwater where a wide angle of coverage is required. Compared to higher frequency sounds, the absorption rate is lower.
200 kHz frequency: This signal resolution makes it easy to differentiate between individual fish and the bottom of the body of water in areas where the water is shallower than 200 meters. High-frequency transmissions don’t reach as deep down into the water.
These fish finders also usually have a lower cone angle, meaning that their coverage area in deep water is narrower. This is the ideal frequency for the vast majority of freshwater applications. It is also a good choice for certain saltwater situations. To get the best results, use it in water that is shallow and don’t exceed the recommended speed. This will minimize echoes and noise.
83 kHz frequency: This frequency is a good middle ground between the 50 kHz and 200 kHz frequencies. The resolution that it offers is lower than what you can achieve at 200 kHz. It also can’t quite reach the same depth as a 50 kHz frequency.
Think About How You Want to Install the Unit
Fish finders are available with a variety of different mounting options. Some have interior mounts while others are mounted on the stern. You can also find hull bolt and motor mounts. There are advantages and disadvantages associated with each option. For instance, if you go with a fish finder that is designed to be mounted indoors, you should choose a 200 kHz transmitter since some of the signal strength can be lost. These types of fish finders are best when used on boats that are relatively small. They also should be reserved for shallow-water fishing.